Is it just me?

Almost worth getting a bunch of business cards made up for all the things that you do yourself, rather than paying someone else to do, and hading him one of those for whatever the subject at hand is.

Could even get ones with a "fill in the blank" for the subject skill.

Of course you certainly don't have to accept any "work" he might try to get you to do.

Could also get cards with "Super Genius" on them.